The 4CX300Y or 8561 is a 400 watt tetrode with full ratings to 110 MHz made by Eimac. This tube requires forced air for cooling and was designed for high shock and vibration.
Length = 2.50" Diameter = 1.65"
Max voltage = 2000
Max current = 400 ma
Fil voltage = 6
Fil current = 3.5 amps GOTO INDEX